Hygieia the Sword

Hygieia the Sword (died c. 420s BCE) was a Greek mercenary who operated during the Peloponnesian War.

Biography
Hygieia's sword moved as fluidly as her shadow, and they were just as inextricably linked. It was impossible to find one without the other. It is said that she learned the craft of making swords so she would be the only one who had ever touched hers - and that in her eyes made it perfect. Those who tried to take it from her suffered.